Pen



FIG. 1 is a front elevational view of a pen showing my new design;

FIG. 2 is a left side elevational view of the pen of FIG. 1, the rightside elevational view being a mirror image of FIG. 2;

FIG. 3 is a front elevational view of the pen of FIG. 1 with the capremoved;

FIG. 4 is a left side elevational view of the pen of FIG. 1 with the capremoved;

FIG. 5 is a front elevational view of the removed cap of the pen of FIG.3;

FIG. 6 is a left side elevational view of the removed cap of the pen ofFIG. 4; and,

FIG. 7 is a top plan view of the pen of FIG. 1.

The ornamental design for a pen, as shown and described.